1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b3cc5545338fbf28283646ffd99b39ae29138ba09d57e1cd79011e793bc5a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbbd37cb-5254-4bbb-a20f-f73201c7b5fc.json and https://artists.proofprofile.net/proofs/artist/bbbd37cb-5254-4bbb-a20f-f73201c7b5fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e965704ad436996e8a0760d8f671ea15ced5112744cb2fa1e136b3cf2cf8955. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2216981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048e0b3dda3bdd711b98422aade04ae6ee4c5ecc4d5f6a6efe8e5d678331b35b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2216982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc40176fd956ab0944dd778df5311eaeb71ab0b758f91c06802661ffa826c61. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2216984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c76fdf0c448c30c796cc79326dec9a82f4f2565d105a3a8c7a7ef1b5f2326d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2242096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a5a9407bd21ece56bc7bb8a0eb18652e6b48ff0e7e38645919ac132884c951. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2242099.
If I Don't See You in the Future, I'll See You in the Pasture
III. Under the Shadow of Another Moon (Dark Night)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cc5e61ab29c041531d1a3138fc0db36aeddfec2e8301b1adbfe3ad33200c6f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2404172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fc4297ac3b63c674fb4ec8bae667a65bac606df8ba2c82271739038715aba8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2500709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b55f2c114935815e4da1110f78533c185865b79d77a811c8733797b0cae0d8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2500714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cc5e61ab29c041531d1a3138fc0db36aeddfec2e8301b1adbfe3ad33200c6f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2404172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997cfd85a76a478684dc76fe93e803a3f31d2721d6d8f17f739ad730c3734a30. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2404194.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a8095fb5bfb2be3bac683e74c8acc02227da5bf484ced9a0f61de01b60d3c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6F2456263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a76fce5d635268c5a8dff9a2e5bb0c4290e6eb22b9707d4575febd26b2256b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDE2382087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b67e1a94b38ace71558171b292adb1d334c1186face7c4d499a5d89b4ec032. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDE2382112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a123260208823ffaf068d6936438e9e881f407cb6df66cf7d455538984c7872. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDE2382113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58485aab3ad7473ef6451c56ef5678353a3146e07aeff0cb0e1a298b62b70ae6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDE2382115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37b085e3581498a41e204d85c2f31c1be4210b1b2c4a28871e02773ab2f3a0. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDE2382130.